Soul Cage (Soulbreaker #1) by L.R. Schulz

Murder Breeds Magic

All power comes with a price. In a world where magic is transferred by the act of killing another, Myddrin stands above the rest. Having accidentally killed the most powerful mage in all of existence, Myddrin now lives a peaceful life in isolation. But there is no such thing as peace in the land of Otor. War calls. The voices of the dead haunt him, and there is nowhere to hide.

Cursed with the deathly taint of magic, young Will must seek acceptance among the Knights of Aen. There, he must learn to touch the otherside, control his abilities, and decide for himself what is right, and what is wrong.

Tvora’s soul is broken. The price of vengeance was her sanity. Her companions help her keep a tenuous grasp on herself, but with the urgent need to absorb enough magic to sustain them, she is pushed to choose a side in the upcoming war. The question remains, will she choose the right one?